US2801937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Felt product and process
Assignee: Congoleum Industries Inc
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Filing: 1955-01-07
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Granted: 1957-08-06
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Expires: 1975-01-07
Abstract
No abstract record available.
Inventors
- 👤 Paul S Hess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:52
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/61; D06; D06N; D06N5/00; D06N7/00; D06N7/0005; D06N7/006; D21H11/00; D21H11/12; D21H11/14; D21H17/20; D21H17/33; D21H17/46; D21H17/53; D21J; D21J1/00; D21J1/08; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/266; Y10T428/31504; Y10T428/31815
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
FELTED CELLULOSIC FIBERS IN SHEET FORM, SAID SHEET HAVING A THICKNESS OF AT LEAST ABOUT 0.025 INCH AND LESS THAN ABOUT 0.10 INCH AND A GAUGE TO WEIGHT RATIO MEANSURED BY THE FORMULA
Claim 2
Dependent Claim
33 words
FELTED CELLULOSIC FIBERS IN SHEET FORM, SAID SHEET HAVING A THICKNESS OF AT LEAST ABOUT 0.025 INCH AND LESS THAN ABOUT 0.10 INCH AND A GAUGE TO WEIGHT RATIO MEANSURED BY THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-05 | 1961-02-04 | 1961-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-05 | 1965-02-04 | 1965-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-05 | 1969-02-04 | 1969-08-06 | $7700.00 | Window Closed / Lapsed |